Air valve sealing rubber strip and air valve

Abstract

The utility model discloses an air valve sealing rubber strip, air valve sealing rubber strip includes sealing piece, sealing piece includes connecting end and butt joint end, and the connecting end of sealing piece is connected in the first base body of air valve, and the butt joint end of sealing piece is used for switching the closed state and the open state of air valve, under the closed state, when the first base body is jointed with the second base body, the butt joint end can be connected in the second base body, to make the blocking gas flow to the joint between the first base body and the second base body, under the open state, the butt joint end is used for separating with the second base body, to make the airflow passage between the first base body and the second base body. Through above -mentioned mode, the utility model discloses an embodiment can improve the airtightness.

Description

Technical Field

[0001] This utility model relates to the field of ventilation technology, and in particular to a sealing strip for an air valve and an air valve. Background Technology

[0002] Current central air conditioning or other ventilation systems are often designed with air volume regulating valves, fire dampers, smoke exhaust fire dampers, and smoke exhaust dampers. These dampers typically consist of movable blades, which open and close the damper. When the damper is open, an airflow channel is formed between adjacent blades to allow gas to flow; when the damper is closed, adjacent blades engage to close the airflow channel.

[0003] In the process of realizing this utility model, the inventors discovered that when the current air valve is closed, there is a gap at the joint of two adjacent blades, and gas can still flow through the gap between the two blades, resulting in poor sealing. Utility Model Content

[0004] This utility model provides a sealing strip for an air valve and an air valve, which can improve the airtightness.

[0005] To solve the above-mentioned technical problems, the present invention provides a sealing strip for a damper, which includes a sealing element. The sealing element includes a connecting end and an abutting end. The connecting end of the sealing element is connected to the first base of the damper, and the abutting end of the sealing element is used to switch the damper between a closed state and an open state. In the closed state, when the first base and the second base are engaged, the abutting end can be connected to the second base to block gas flow to the joint between the first base and the second base. In the open state, the abutting end is used to separate from the second base to form an airflow channel between the first base and the second base.

[0006] Optionally, the seal includes a transition section and a main body section. The transition section is located at the connecting end of the seal. One end of the transition section is used to connect to the first substrate, and the other end of the transition section is connected to the main body section. On the leeward side of the seal, the outer contour of the transition section smoothly transitions to the outer contour of the main body section.

[0007] Optionally, the thickness of the seal gradually decreases from the connecting end to the abutting end.

[0008] Optionally, a contact surface is provided on the leeward side of the abutment end, and the shape of the contact surface allows it to fit into the second substrate.

[0009] Optionally, the sealing element is made of a flexible material so that, in a sealed state, the abutting end of the sealing element can abut against the second substrate under the action of wind.

[0010] Optionally, the damper sealing strip also includes a connector, the connecting end of the seal is connected to the connector, and the connector is provided with a snap-fit ​​groove for snapping into the first substrate.

[0011] Optionally, the connector is provided with a first sidewall, a second sidewall, and a bottom wall. One end of the first sidewall is connected to the bottom wall, and one end of the second sidewall is connected to the bottom wall. The first sidewall, the second sidewall, and the bottom wall form a snap-fit ​​groove. The distance from one end of the first sidewall to the other end is different from the distance from one end of the second sidewall to the other end, so that when the other end of the first sidewall and the second end of the second sidewall are in contact with each other, one of the first sidewall and the second sidewall protrudes from the other.

[0012] Optionally, the seal and the connector are arranged at an angle, such that when the first substrate and the second substrate are engaged, the abutting end of the seal can be connected to the second substrate.

[0013] Optional, the seals and connectors are integrally molded.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: to provide a damper, including a damper body, blades and a damper sealing strip as described in any of the above embodiments; the blades are movably disposed on the damper, and the number of blades is one or more; the damper body is provided with a first baffle and a second baffle, and the first baffle and the second baffle are respectively disposed on both sides of all blades; wherein, the first base is a baffle or a blade, and the second base is a baffle or a blade adjacent to the first base.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, this utility model embodiment provides a damper sealing strip, which includes a sealing element. The sealing element includes a connecting end and an abutting end. The connecting end of the sealing element is connected to the first base of the damper, and the abutting end is used to switch the damper between a closed state and an open state. In the closed state, when the first base and the second base are engaged, the abutting end can connect to the second base to block gas flow to the joint between the first and second bases. This improves the damper's sealing performance. In the open state, the abutting end is used to separate from the second base, forming an airflow channel between the first and second bases. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is a perspective view of the sealing strip of the air valve according to an embodiment of the present utility model;

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1 AA section view in the middle;

[0019] Figure 3 This is a schematic diagram of the air valve according to an embodiment of the present utility model;

[0020] Figure 4 This is an embodiment of the present utility model. Figure 3 BB section view in the middle;

[0021] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged view of part A in the image;

[0022] Figure 6 This is an embodiment of the present utility model. Figure 4 Enlarged view of part B in the image.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Air valve sealing strip;

[0025] 1. Sealing element; 11. Connecting end; 12. Abutting end; 13. Contact surface; 14. Transition section; 15. Main body section;

[0026] 2. Connector; 21. First sidewall; 22. Second sidewall; 23. Bottom wall; 24. Snap-fit ​​groove;

[0027] 200. Air valve;

[0028] 3. Air valve body;

[0029] 4. Leaves;

[0030] 5. First retaining edge. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0033] Please see Figure 3 A damper 200 is a common component in ventilation systems, often used in scenarios requiring airflow regulation, smoke extraction, and fire prevention. A damper 200 typically has a closed state and an open state. In the closed state, airflow cannot pass through the damper 200; in the open state, airflow can pass through the damper 200.

[0034] To achieve the above functions, the damper 200 includes a first base and a second base, at least one of which is movable. By adjusting the movable first base and / or second base, the damper 200 can switch between a closed state and an open state. In the open state, a vent is formed between the first base and the second base to allow airflow. In the closed state, the first base and the second base are engaged to close the vent, thereby preventing airflow. However, in the closed state, a gap may exist at the joint of the first base and the second base, and the damper 200 may leak air at this gap, causing the damper 200 to fail to meet the airtightness requirements.

[0035] Based on this, this utility model embodiment provides a damper sealing strip 100, applied to the aforementioned damper 200, aiming to improve the sealing performance of the damper 200 in a closed state. One of the design concepts of the damper sealing strip 100 of this utility model is that, in a sealed state, the damper sealing strip 100 seals the joint between the first substrate and the second substrate.

[0036] Please see Figure 1The damper sealing strip 100 includes a sealing element 1 and a connecting element 2, with the sealing element 1 disposed on the connecting element 2. The connecting element 2 is disposed on the first base of the damper 200. The sealing element 1 can switch between the sealed and open states of the damper 200. In the sealed state, the first and second bases of the damper 200 are engaged, and the sealing element 1 is connected to the second base to block gas flow to the joint between the first and second bases. In the open state, the sealing element 1 is separated from the second base to form an airflow channel between the sealing element 1 and the second base. When the damper 200 needs ventilation, there is a gap between the first and second bases to allow gas flow. At this time, the sealing element 1 is separated from the second base, forming an airflow channel between the sealing element 1 and the second base, allowing gas to flow through the airflow channel. When the air valve 200 needs to be sealed, the first base and the second base are joined together, the seal 1 is connected to the second base, and the seal 1 covers the joint between the first base and the second base, thereby reducing the risk of airflow passing through the gap between the joint between the first base and the second base, thereby improving the sealing performance.

[0037] It should be noted that the sealing element 1 in this embodiment of the present invention can separate from the second substrate as the first substrate and the second substrate separate; and can contact the second substrate as the first substrate and the second substrate join. After the damper sealing strip 100 is assembled, the damper 200 can automatically switch between the sealing and opening states without the need for separate sealing or opening operations on the damper sealing strip 100. In other words, the damper sealing strip 100 in this embodiment of the present invention can improve the airtightness of the damper 200 without making the operation more complicated.

[0038] For seal 1 mentioned above, please refer to... Figure 2 The sealing element 1 includes a connecting end 11 and an abutting end 12. The connecting end 11 is used to connect to the first base of the air valve 200, and the abutting end 12 is used to connect to the second base or to separate from the second base, so as to switch the sealing state and the opening state of the air valve 200.

[0039] It is understood that the present invention does not limit the connection method between the connecting end 11 and the first substrate. The connecting end 11 can be directly connected to the first substrate, or it can be indirectly connected to the first substrate through other structures, as long as it can prevent airflow from flowing to the joint between the first substrate and the second substrate in a sealed state. Optionally, the sealing element 1 can be connected to the second substrate by means of bonding, snap-fitting, or screwing. Optionally, the connecting end 11 of the sealing element 1 can be connected to the windward side or the leeward side of the first substrate, or the connecting end 11 of the sealing element 1 can be connected to both the windward side and the leeward side of the first substrate. Optionally, in a sealed state, the abutting end 12 can be connected to the windward side or the leeward side of the second substrate.

[0040] In some embodiments, the abutment end 12 is provided with a contact surface 13 for connecting with the second substrate. The shape of the contact surface 13 matches the shape of the portion of the second substrate used for connecting with the abutment end 12, so that the contact surface 13 can fit against the second substrate in a sealed state. The surface-to-surface contact connection between the abutment end 12 and the second substrate further improves the airtightness of the damper sealing strip 100.

[0041] In some embodiments, at least a portion of the connecting end 11 of the seal 1 is connected to the windward side of the first substrate, and in the sealed state, the abutting end 12 of the seal 1 is connected to the windward side of the second substrate. In this case, the contact surface 13 is located on the leeward side of the abutting end 12. Through this arrangement, when airflow reaches the seal 1, it compresses the abutting end 12, reducing the risk of a gap forming between the seal 1 and the second substrate, thereby ensuring a tight seal.

[0042] In some embodiments, the seal 1 further includes a transition section 14 and a main body section 15. The transition section 14 is disposed at the connecting end 11 of the seal 1. One end of the transition section 14 is used to connect to the first substrate, and the other end of the transition section 14 is connected to one end of the main body section 15. The end of the main body section 15 away from the transition section 14 is the abutting end 12 of the seal 1, which is the abutting end 12 of the main body section 15.

[0043] In some embodiments, the thickness of the main body segment 15 gradually decreases from the connecting end 11 to the abutting end 12. Furthermore, in the sealed state, the abutting end 12 is located on the windward side of the second substrate. It is understood that the thinner the portion of the seal 1, the lower its rigidity and the easier it is to deform. Therefore, the sealing end of the main body segment 15 is most prone to deformation. When the air valve 200 is in the sealed state, when airflow passes through, the abutting end 12 is compressed by the airflow, causing it to abut against the second substrate, reducing the risk of gaps between the abutting end 12 and the second substrate. Moreover, because the thickness of the main body segment 15 is gradually changing, while allowing the abutting end 12 to deform easily, the main body segment 15 also maintains overall structural stability. The structurally stable main body segment 15 ensures that the abutting end 12 can be stably connected to the second substrate in the sealed state.

[0044] In some embodiments, in the sealed state, the seal 1 is located on the windward side of the air valve 200. On the leeward side of the seal 1, an arc surface is formed between the outer contour of the transition section 14 and the outer contour of the main body section 15. The arc surface makes the seal 1 easier to bend and deform, making it easier for the main body section 15 to rotate toward the second substrate under the action of airflow, thereby making it easier for the abutment end 12 to abut against the second substrate. It is understood that the outer contour surface formed between the transition section 14 and the main body section 15 can also be of other shapes, as long as a smooth transition between the outer contour of the transition section 14 and the outer contour of the main body section 15 can be achieved. Optionally, on the windward side of the seal 1, the outer contour of the transition section 14 and the outer contour of the main body section 15 smoothly transition.

[0045] In some embodiments, the sealing element 1 is made of plastic, so the sealing element 1 is easily deformable so that the abutting end 12 abuts against the second substrate under the action of airflow. The sealing element 1 can also be made of other flexible materials, as long as the abutting end 12 of the sealing element 1 can abut against the second substrate under the action of wind in a sealed state.

[0046] For connector 2 mentioned above, please refer to Figure 2 The connector 2 includes a first sidewall 21, a second sidewall 22, and a bottom wall 23. The first sidewall 21 and the second sidewall 22 are disposed opposite each other on both sides of the bottom wall 23, with one end of the first sidewall 21 connected to the bottom wall 23 and one end of the second sidewall 22 connected to the bottom wall 23. The first sidewall 21, the second sidewall 22, and the bottom wall 23 form a snap-fit ​​groove 24, which is used to snap with the first substrate. The sealing element 1 is disposed on the side of the second sidewall 22 opposite to the snap-fit ​​groove 24. An opening for the first substrate to snap into is formed between the other end of the first sidewall 21 and the other end of the second sidewall 22, and the opening communicates with the snap-fit ​​groove 24. When assembling the damper sealing strip 100, only the edge of the first substrate needs to be snapped into the snap-fit ​​groove 24, thus reducing the assembly steps of the damper sealing strip 100 and simplifying the assembly operation.

[0047] In some embodiments, the distance from one end of the first sidewall 21 to the other end is different from the distance from one end of the second sidewall 22 to the other end. It should be noted that before the damper sealing strip 100 is assembled, the first sidewall 21 and the second sidewall 22 may be in contact with each other. In this case, an opening cannot be formed between the first sidewall 21 and the second sidewall 22, making assembly difficult. It is necessary to separate the other ends of the first sidewall 21 and the second sidewall 22 before assembly can proceed. In this embodiment, the height of the first sidewall 21 (i.e., the distance from one end of the first sidewall 21 to the other end) is different from the height of the second sidewall 22. When the first sidewall 21 and the second sidewall 22 are in contact, one end of the first sidewall 21 and the other end of the second sidewall 22 protrudes beyond the other, making it easier for the operator to grasp the protruding end to separate the first sidewall 21 and the second sidewall 22, thereby improving the assembly efficiency of the damper sealing strip 100.

[0048] In some embodiments, the seal 1 and the connector 2 are arranged at an angle, that is, the groove depth direction of the snap-fit ​​groove 24 is at an angle to the direction from the connecting end 11 to the abutting end 12. The angle between the seal 1 and the connector 2 allows the abutting end 12 of the seal 1 to connect to the second base when the first base and the second base are engaged. It is understood that the shape and size of the first base and the second base differ in different models of the damper 200, and those skilled in the art can select the angle value as needed to match various types of dampers 200.

[0049] In some embodiments, the seal 1 and the connector 2 are integrally injection molded. This eliminates the need for assembly operations to connect the seal 1 and the connector 2, thereby improving assembly efficiency. Furthermore, the integral molding of the damper sealing strip 100 makes its overall structure more stable, ensuring that the abutting end 12 of the seal 1 is stably connected to the second substrate in a sealed state.

[0050] Optionally, the thickness of the first sidewall 21, the second sidewall 22, and the bottom wall 23 is 0.8 mm. The distance between the side of the first sidewall 21 away from the bottom wall 23 and the side of the bottom wall 23 away from the first sidewall 21 is 10.8 mm. The distance between the side of the second sidewall 22 away from the bottom wall 23 and the side of the bottom wall 23 away from the second sidewall 22 is 8.8 mm. The distance between the side of the first sidewall 21 away from the second sidewall 22 and the side of the second sidewall 22 away from the first sidewall 21 is 3.6 mm. The width of the snap-fit ​​groove 24 is 2 mm. The distance between the side of transition section 14 away from the second sidewall 22 and the side of the second sidewall 22 facing away from transition section 14 is 1.94 mm. The distance between the side of main body section 15 near the second sidewall 22 and the side of the second sidewall 22 facing away from transition section 14 is 1.94 mm. The distance between the end of main body section 15 near transition section 14 and the end away from transition section 14 is 20 mm. The thickness of the end of main body section 15 away from transition section 14 is 0.4 mm. The seal 1 and the connector 2 are set at 45°.

[0051] In this embodiment of the invention, the damper sealing strip 100 includes a sealing element 1. The sealing element 1 includes a connecting end 11 and an abutting end 12. The connecting end 11 of the sealing element 1 is connected to the first base of the damper 200, and the abutting end 12 of the sealing element 1 is used to switch between the closed and open states of the damper 200. In the closed state, when the first base and the second base are engaged, the abutting end 12 can connect to the second base to block gas flow to the joint between the first and second bases. This improves the sealing performance of the damper 200. In the open state, the abutting end 12 is used to separate from the second base, forming an airflow channel between the first and second bases.

[0052] This utility model provides an embodiment of the air valve 200; please refer to [link / reference]. Figure 2-6 The damper 200 includes the damper 200 body, the blade 4, and the damper sealing strip 100 mentioned above. For the structure and function of the damper sealing strip 100, please refer to the above embodiments, which will not be repeated here.

[0053] The blades 4 described above are movably mounted on the body of the damper 200, and there are one or more blades 4. The damper 200 body is provided with a first baffle 5 and a second baffle (not shown), which are respectively disposed on both sides of all blades 4. The first base is a baffle or blade 4, and the second base is a baffle or blade 4 adjacent to the first base.

[0054] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A sealing strip for an air valve, characterized in that, include: A sealing element includes a connecting end and an abutting end. The connecting end of the sealing element is used to connect to a first base of a damper, and the abutting end of the sealing element is used to switch between a closed state and an open state of the damper. In the closed state, when the first base and a second base are engaged, the abutting end can connect to the second base so that the sealing element blocks gas flow to the joint between the first base and the second base. In the open state, the abutting end is used to separate from the second base so that an airflow channel is formed between the abutting end and the second base.

2. The sealing strip for the air valve according to claim 1, characterized in that, The sealing element includes a transition section and a main body section. The transition section is disposed at the connecting end of the sealing element. One end of the transition section is used to connect to the first base body, and the other end of the transition section is connected to the main body section. On the leeward side of the seal, the outer contour of the transition section smoothly transitions with the outer contour of the main body section.

3. The sealing strip for the air valve according to claim 1, characterized in that, The thickness of the seal gradually decreases from the connecting end to the abutting end.

4. The sealing strip for the air valve according to claim 1, characterized in that, The leeward side of the abutment end is provided with a contact surface, and the shape of the contact surface allows it to fit into the second substrate.

5. The sealing strip for the air valve according to claim 1, characterized in that, The sealing element is made of a flexible material so that, under the action of wind force in the sealed state, the abutting end of the sealing element can abut against the second substrate.

6. The damper sealing strip according to any one of claims 1-5, characterized in that, The air valve sealing strip also includes a connector, the connecting end of the sealing element is connected to the connector, and the connector is provided with a snap-fit ​​groove for snapping into the first substrate.

7. The sealing strip for the air valve according to claim 6, characterized in that, The connector is provided with a first sidewall, a second sidewall, and a bottom wall. One end of the first sidewall is connected to the bottom wall, and one end of the second sidewall is connected to the bottom wall. The first sidewall, the second sidewall, and the bottom wall together form the snap-fit ​​groove. The distance from one end of the first sidewall to the other end is different from the distance from one end of the second sidewall to the other end, so that when the other end of the first sidewall and the second end of the second sidewall are in contact with each other, one of the first sidewall and the second sidewall protrudes from the other.

8. The sealing strip for the air valve according to claim 6, characterized in that, The seal and the connector are arranged at an angle, such that when the first substrate and the second substrate are engaged, the abutting end of the seal can be connected to the second substrate.

9. The sealing strip for the air valve according to claim 6, characterized in that, The seal and the connector are integrally formed.

10. An air valve, characterized in that, Includes the valve body, blades, and the valve sealing strip as described in any one of claims 1-9; The blades are movably disposed on the valve body, and the number of the blades is one or more. The valve body is provided with a first baffle and a second baffle, which are respectively disposed on both sides of all the blades. Wherein, the first substrate is the baffle or the blade, and the second substrate is the baffle or the blade adjacent to the first substrate.

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